So it is going to be quite pricey, I paid £60 for it before, that was why I was so annoyed that the guy at Bluespot wouldnt refund me when he sent me the wrong one.
Ended up costing me £140 with delivery.

Had a little bit of interference on the radio again despite the cable reroute. Seems the weather makes it more prone to it. Added a ferrite clamp from rs to the wires and the problem seems completed solved.

Coding to HIFI is causing me some bother though despite the many bits of info around here and on the wider internet. I have added $676 to my VO and have written this to CAS and NFRM and then tried to recode RAD2 (using the latest SPdaten) which doesn't seem to have worked. My car is an 07 so perhaps I need to use an older SPdaten, I know that the radios have changed quite a bit. Any thoughts on this or should I take this over to the coding thread?

Demig

Edit: got it to work, hadn't left the car to sleep for long enough! Also recoding PDC module in expertmode which seems to have increased the volume of the parking sensors although they could still do with being a little louder

Jammy
I used it long time ago. So can't remember from the top of my head.
But if one is input (toward amplifier) and other is output (toward car), and if these sockets go into each other, then you are basically returning the signals to the back speakers.

However by doing that you will loose the input and out put socket on rear two channels.
How will you connect your under seats?
You will have to customise the harness.
If you go back few pages on this thread, I have edited a photo to show what hack you should do to use the rear channels for under seats.

After reading the thread again & having the harness next to me... It's making sense now!

So I have to do this:

Quote:

Originally Posted by makkan00

At the moment your front and rears are amped.
Front through front channels of the amp and rears through the rear channel of the amp. In OEM BMW sound system, front mids / speakers and underseats are connect in parallel, so power is halved. That is what has happened in your car.

What you should do?
1- Run rears through headunit rather amping them.
2- Manage the connections so all 4 channels get the signals from the front of your headunit.
3- Run new wires to your underseats from the amplifier. You will have to cut the wires going to your underseats and connect to these new wirings.

Here is what you should do.
1- Cut those wires and buy bullet connectors to connect these wires to each other. See number 1 in the photo. (connect wires and not connectors). Wires are colour coded, so connect the same colour wires.
2- Remaining portion of the wires on the clip on the left is input to the amplifier for the rear channel (use it for underseats). It should have signals from the front of your headunit.
So using wire tapping connectors, you should tap the wires of connector next to it (which is getting the signals for the front speaker). Once tapped correctly, all 4 channels of the amp will be getting the signals from the front of the HU.
3- Remaining portion of the wires of extreme right should be connected to the new wires going to the under seats.

So in nutshell, you should make sure that ;
- All 4 channels are getting the signals from the front of the head unit.
- Front channels of the amp will be used to power the door speakers (high passed)
- Rear channels of the amp will be used to power the under seats (low passed.

I've an e60 with iDrive and looking to upgrade. Having read this thread I'm thinking that the tha275 with a harness would be enough with an l7 tweeter upgrade. Can I confirm that this would be cool? I'd go for the 475 but fearful of running the extension as I wouldnt want any fixings to come loose. I'm anal about creaks and noises in the car.

I'm totally inept when it comes to car audio so does anyone know someone in Edinburgh that could install this for me?